Utilising microlouver technology from 3M, Lenovo Privacy Filters help keep sensitive information like login credentials, company financial records and other private data secure from visual hackers. Crisp and clean display clarity directly in front of the screen, yet “blacked out” on side viewing angles. Ensure you have a strong first line of defence in the fight against data security breaches with Lenovo Privacy Filters. Reversible for either glossy or matte screen finishReduces glare when used with the matte side facing youEasy on easy off attachment systemExcellent for high traffic areas Helps protect your LCD panel from scratches 3M 1 year warranty